where queen elizabeth is set to take a historic stand against discrimination, it will include the strongest statements she's ever made about women's rights. Reporter: Above all, the queen represents centuries of tradition and continuity, and she usually steers clear of making political decisions. But in a break with tradition, she will sign a remarkable document tomorrow and will give a speech endorsing the new agreement among former members of the british empire. Which states opposition to, quote, all forms of discrimination, whether rooted in gender, race, color, creed, political belief, or other grounds. This is believed to be the first time she's shown her support of gay rights. That's a big step. We're not going to hear her views on these matters, but the fact that she's not only signing t but signing it before television cameras, really does prove she endorses these changes. Reporter: The queen will show support for new laws giving equal rights to boys and girls in royal succession. The timing of this is significant because with will's and kate's baby on the way. If it's a girl, this means she will be the next queen. A first. With the stroke of the pen tomorrow, the queen will be making an historic, if symbolic, pledge for equal rights for billions of people in 54 countries around the world.

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